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Cannondale Spider Rings The spider rings, a combination of spider and chainrings, are manufactured in one piece in 3D forging and CNC milling technology. This results in an extremely lightweight and torsion-resistant chainring combination. The design was inspired by alloy wheels, with thin spokes, from the automobile racing. The gradations are made with 50-34 or 53-39 teeth and are 10 and 11 times compatible. With adapted tooth profiles, shift ramps, shift lanes and chain line n, the shift behavior is thus at the absolute top level of comparable high-end road bike components.